Long-term storage and humidity

I'd like to actually know what's the degree of humisity where tea is stored. Any hygrometer that's recommended ? And what would be the acceptable range for long-term tea storage (puerh, green, black) ? All loose teas in sturdy 'aluminium' zip-sealable bags gotten at Upton), each one then being put in a regular plastic bag. Puerh are mostly in their paper wrappers, some cakes also wrapped in (bamboo ?) large dried leaves.

skilfautdire wrote:I'd like to actually know what's the degree of humisity where tea is stored. I think it is too humid, not sure.

Pu-erh Storage * Keep the storage space free from odors. * Do not use unsuitable packaging materials wrap the teas. Breathable packaging is suitable for aging, just keep it in original factory packing is fine. * Maintain a proper air flow. * Do not keep it in a damp musty basement. 70% humidity is a good target. * Avoid high fluctuation of temperature.